Insurance comparing at the moment. Didn't put in that I had any alarm/tracker etc. just factory immobiliser. Then changed/tweaked it to add a tracker, price went UP! I think that if someone really wants to steal a vehicle, they will if you rely on alarms/trackers. I also wouldn't want to advertise that I had an alarm/tracker (stickers etc.) If the thief is dong a recky then they'll know to come prepared. I've got a bulldog wheel clamp and a steering wheel clamp and will look to locking the driver seat the wrong war around. Anything to slow them down.